ejection port
Casing escape hatch
An ejection port is the opening in a firearm through which spent cartridge casings are expelled after firing.
The port allows the action to cycle smoothly, throwing brass clear of the chamber: Hot casings flew from the ejection port.
The term extends to any mechanism that ejects material through a dedicated opening.
- shellHard outer covering
- casingEnclosing cover or frame
- brassCopper-zinc metal mixture
- cartridgeSealed container for supplies
- firearmProjectile weapon using explosives
slide · extract · expel · bolt · rifle · pistol · semiautomatic · dust · dust cover · cover · kick · flying · hot · spent · action · mechanism · opening · receiver